Residential solar panels can convert up to 18 percent of the sunshine that falls on them into electricity

. The efficiency of solar panels will depend on various factors such as the quality of the panels, the angle and direction they are facing, shading, and weather conditions. Advances in solar technology continue to improve the efficiency of solar panels, with some newer models reaching efficiencies of over 20 percent. It is important for homeowners considering installing solar panels to carefully assess their energy needs and choose the best system for their specific circumstances.